Flagstone industry in northeastern Pennsylvania
By: by R.W. Stone
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Bulletin. Bureau of Topographic and Geologic Survey -- no. 72; Progress report (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 72.
Publisher: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geological Survey
Published: 1923
Place of publication: [Harrisburg, Pa.]
Language: eng
Subjects: Geology
Notes: Pa. State Docs. class. no. PY G345/4.17/8:no. 72.

Caption title.

April 5, 1923.